Maybe this will reassure you Claim: Vaccines were rushed, and might be unsafe
I am certainly pro-vax as I have said many times and I don't think the rushing through makes it unsafe. That being said there is nothing wrong with having concerns about long term effects as there is simply no data (and no way to get the data) on this. Lets say for example having the C19 vaccine makes your ears fall off in 20 years, we can't predict that now. The same of course could be said for catching C19, it could also make your ears fall off in 20 years. We learn all the time, just look at HPV, it took a long time before we realised that having the infection caused a increased risk of cervical cancer.
On balance the vaccine is almost certainly good, especially for the elderly and those vulnerable to serious illness or death from C19, but for the young and healthy, it is far from clear cut.