Hi Codes,
if you feel up to it, you could treat this as a golden opportunity to do an exposure task.
The "Theory B" in CBT for OCD is that you only have an anxiety disorder -- a worrying problem -- and that you are not in fact in any real danger.
To test out this Theory B (as opposed to Theory A, that you are actually in some kind of danger), the therapist or the OCD patient sets tasks to test out which of the two theories is correct.
The task might be, for example, to go without showering for one day, and to see if (a) the distress builds and builds and builds, until something terrible actually happens, or (b) the distress builds and builds and builds...and then peaks...and then it levels out...and then, given enough time, or by repeating the task often enough, the distress level starts to go down...and down...until eventually it is very low, and in fact nothing terrible happens at all.
That would be an example of an exposure task that an OCD patient might set him- or herself when they are going through, or have finished, a course of CBT.
The CBT therapist would probably advise you that finding a way to reassure yourself is a short-term solution. And that testing out the two competing theories is a way to find a long-term solution.
But of course, you must do what you think is best. So I'm not going to tell you not to reassure yourself. If you want to, then go ahead. Just be aware that a CBT therapist would probably tell you that reassurance is only a temporary solution -- and that there is a long-term solution, if you are willing to try it.
I hope you feel better soon.