Do I need to go back to obgyn?

I honestly don’t like my obgyn. They were terrible during my pregnancy and it’s kind of hard to find a new obgyn, but I got my iud put in and it’s my 6 week check up to see if it’s still in place. Do I have to get this check up done? I really don’t want to go back especially when they had to reschedule me. I was supposed to go on the 30th of December before my new insurance started and I had met my deductible. They rescheduled me to the 6th of January when they fully knew well it would be when my new insurance started and I really don’t want to pay 160 dollar copay 🙁. Is the 6 week check up necessary?