Please hlp i am scared now am i pregnant?

I had with my bf in Oct he came in me loads, i did a test a few weeks later due to late period, it came about 9 days after but was really really liight, in the mean time we got back to using protection, then in Nov it was really light too, but Dec I had again with him, without protection (SILLY US) I was late on my period only had it last week. it was really heavy, I am gettin like round-ish tummy and start too feel sick:-( am i preg? what u think, private messages welcome.