Post c section bleeding and cut question

I'm almost 4 weeks postpartum. First 5 days I was in hospital.

After my c section, for the first 2 days I didn't bleed at all and I was out of bed the same day of my c section so that was weird to me. After those 2 days I stood up once and bleed to the floor, midwifes and doctors checked my blood pressure and if my uterus was contracting, it was so they said it was down to my breastfeeding or something.

I bled only for 3days pretty heavy and it stopped again, I thought it was over.

A week of no blood and I start bleeding again, but this time it's heavy brown blood, I thought okay it's just left over blood that stayed in my uterus I guess?

I stopped the brown bleeding 3days ago and yesterday I started bleeding bright red blood again, but it's on and off, not much in my pad but seems pretty heavy on the toilet paper, but it's not always there if that makes sense, and I noticed when I do bleed this bright red blood, my c section cut hurts even more and the skin is more sensitive only on the right side, and when I touch the cut, the right sides cut is raised with some lumps but the left is flat and has no pain at all?

I do have covid so I have been coughing quite alot (very painful to the cut may I add 😖) but the raised lumps where there before my cough.

Could this be normal to recovery? I didn't have this with my first c section 4 years ago but I know normal can be different case by case. I don't want to bother anyone over the holidays so I'll call doctors after New year's, I'm not dying and it's manageable, plus as I said I've got covid 😅