SMB2006

I would be grateful for any thoughts anyone has on this. I had sex with my n boyfriend on 26 and 27 Sept. We used condoms but because i dont trust them on their own, took Levonelle MAP on 28th. Felt ok and started what I thought was my period on 12 Oct. I also started taking birth control on the first day of "period" But it was very light, as i only needed a pantyliner but it was nearly black in colour and usually my period is very very heavy. Now for the past week or so I have constantly been feeling really nauseous, yesterday and today was especially bad and my breasts are tender. I feel very warm and this morning i woke up in a cold sweat, my clothes were so soaked i had to change them. Ive taken 4 preg tests but they have been negative (took one this morning). I am still bleeding till this day, so that is for over a month now, although there was very little blood today. I have stopped taking the pill now as I am hoping that my period will start. I didnt take a break in between packs. I’m really worried that I am pregnant as I am feeling so rough. Has anyone experienced symptoms like these and not been pregnant. Apologies for the long winded post - just a lot of different things going on.