Please read

I had some severe cramps a week before my period and I still don’t understand what they were I’m now 3 days late on my period and had white discharge today. I have sore breasts and no cramps. The severe cramps a week before were so extreme that I could no walk up straight and they came out of nowhere when I was standing and knocked me off my feet. I went to urgent care and they were not help they just said they were cramps and to take ibuprofen. Early this month 5 days before ovulation I had protected sex but i noticed that the condom was a little loose but like always we did it he pulled before he cummed and the condom was still on. Now I have a reddish pink almost brown discharge when I wiped today. Had a headache all day yesterday. I woke nauseous today and had a back pain. What do you guys think it is? Can I be pregnant?