Hello all I'm not sure whether I'm a crazy pregnant lady overthinking or I may have a point but I really need some advice from mums to put my mind at rest a little! I'm currently 18+2 with my first. Twins run quite heavily in both myself and my boyfriend's family (his mother is a twin, he is not). Since, about 7 weeks I've had a "feeling" I was carrying twins. Not reliable I know but as pregnant women we all have these "I just know" feelings about things (whether or not we're right is a totally different matter!!). I had my first (and only as yet) scan at 12+6. The midwife zoomed close in to take photos of baby however, there was a point in the scan where she zoomed far out for a couple seconds. I happened to notice what I took to be 2 sacks, one on the left and one on the right. Straight away when she had zoomed back in my boyfriend asked "there is only one baby isn't there?" and the midwife said yes. He then informed me that he had asked this as he had seen the two sacks that I then told him I had seen too. This played on my mind but I was just happy my baby was healthy and pushed it to the back of my mind. However, I explained what we had seen to my usual midwife at my 16 week appointment and the fact that I believed I had picked up 2 heartbeats on my home doppler on multiple occasions. She asked me whether or not I was sure there was only 1 baby. I answered that as the midwife at the hospital had told me there was only 1, I had believed what I was told but that there was doubt in my mind. She told me we'd know for sure at my 20 week scan. Since this, I took another look at the scan photos we have and compared them (we have 3 different images). I have attached them for you to look at but basically, to me, 2 photos look the same and one looks different (I know this is the part where I sound crazy haha!) Image 1 is a clear image of baby, image 2 is a blurrier image of baby facing the same way and image 3 is the image in which I notice differences. Family members have acknowledged these differences too but don't really know what to think. I have circled the 2 main differences which are the shape of the head (In images 1 and 2, the head seems to go in quite a straight, smooth line down the face, thre isn't much of an ident near the eyes, nose or mouth. In the 3rd image, the forehead looks more prominent and there seems to be more of an indent where the facial features would be. The second difference is where the baby's neck would be (in the first 2 images there is a clear curve inwards between the head and back where the neck would be although it is slightly blurred in the image 2. In the 3rd image, there is no dent at all just a straight line from the head to the back). I'm sure it could be my hormones driving me pretty insane but 1) would it be possible that I could be carrying twins that have been missed if they are in seperate sacks? 2) Are there any differences in baby or am I letting my hormones rule me as a crazy, overthinking pregnant lady?! Thank you for letting me rant my mad ramblings and any advice would be greatly, greatly appreciated!