We have a lot of OCD in our family including myself. I got it very bad when I was pregnant and after I gave birth it escalated further. I actually didn't know I had OCD until my son at age 7 started showing signs and they worked out I had it. Unfortunately, my daughter then developed it and has had severe OCD for all of her teen years.
OCD is a response to stress and anxiety - rather than healthy coping mechanisms during periods of stress our brains try and calm us by repetitiveness. It can get better if we feel calmer, it can get worse if we are under stress and pressure as you are now.
One of my biggest regrets is when my daughter developed OCD I refused to put her on medication - I wanted her to have therapy first as that's what I had done and it worked. Unfortunately, the cruelness of OCD is once someone gets worse there are more rituals and rules to unravel. She ended up being on meds for 5 years...and after a year of going off them is going back on them again.
I think its really important you don't think of yourself as weak - that's not fair on you - you didn't choose this and everyone with OCD finds it a struggle. I also don't think you worrying about your relationship is going to help because that's a stressor so therefore a trigger - can you have a frank chat with your hubby to let him reassure you?
What you need rather than thinking I should be resisting is to change your mind set....my OCD is getting worse, what is stressing me - why is it getting worse - what can I do to reduce my anxiety? Find some techniques to help that - breathing slowing can help, another thing is pay more attention to outside of your head noises like the sounds in the kitchen / cars on the road, gently stroke your own arm and feel the sensations - you are trying to distract yourself from paying attention to internal thoughts.
If you look at the OCD websites they can sometimes share tips on what has helped them.
Our first therapist said something that stuck in my head - the therapist had said it was likely my mum had not known how to deal with her anxiety and therefore did not pass on good copy behaviours to me...and so I did not have these to pass onto my kids so she was going to help us all learn coping behaviours for stress.
But there is one thing I want to share with you that helped me most with my OCD... I realised my children were watching and copying me. I noticed one day my daughter at aged 4 pumped the soap a few times when she was washing her hands and I asked her why she did that instead of just one pump. She said because you do it mummy...and knowing that my kids are learning my bad habits was a huge motivation to be a better role model to them.
I also think that it is very common to have OCD when you are neurodivergent - is there any chance you also have ADHD or autism? I ask because knowing if you are neurodivergent can sometimes help as you can better as you understand why you find some things more stressful.