For me personally it wouldn't be worth it to take another Plan B. Plan B is only about 95% effective anyway, and it's really only pumping progestin-only birth control into your body, which is what your Nexplanon is already doing in a pretty decent dose.
What I would do, however, is go to Amazon and buy some of their pregnancy tests. They sell packs of 25 for about $8. Super duper worth it for helping put your mind at ease, and they'll be useful to you in a few weeks when you should test anyway just to be safe.
Same here! I have a pack of test strips like this so that I can test whenever! They're inexpensive and help with my peace of mind.
I didn't expect it to work cos I just cheaped out but I've only been using it for a couple days and my skin is a lot less bumpy! It's called Salicylic Acid 2% solution by Pure
Here's the link: https://www.amazon.com/dp/B07C9LGZ34/ref=cm_sw_r_cp_api_i_76RRG0NVQ2H51R2KD5EF?_encoding=UTF8&psc=1
I like the Kotex U fitness liners (https://www.amazon.com/dp/B01N5R76CQ/ref=cm_sw_r_cp_apa_i_A.7nFbT4CW316) I like the thickness and shape of them. They can hold a whole day of light bleeding pretty easily and the shape is comfortable.