Hello. I am 20 and I'm a single mum of a 3 year old. 3 months ago I had unprotected sex several times and my partner came in me. We thought I was pregnant but the test American back negative. However the last 3 days I've gone up from a size 6 to a size 10. Im constantly hungry and if I dnt eat for like 20 mins I feel faint. I have nausea now and again. I'm very emotional. Crying at everything. I've took a test but it's negative. With my first it took me till I was 13 weeks pregnant to get a positive test. Do you think I'm pregnant. When we had intercoms I forgot to take my contraceptive pill a couple of times too. I've stopped the pill for 2 days now and no period